Institution
Bavarian State Library
20
Zentralbibliothek Zürich
5
University Library of Regensburg
4
Toulouse and Midi-Pyrénées Universities Libraries Network
2
Universitätsbibliothek der Humboldt-Universität zu Berlin
2
National Library of Sweden - Kungliga biblioteket
1
Saxon State and University Library
1
Bern University Library
1